Sight for firearms.



J. WINDEIDGE.

SIGHT FOR FIREARMS.

urmonlou FILED In. a, mo.

Patented July 11, 1911.

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WITNESSES J. WINDRIDGE.

EIGHT FOR FIREARMS.

APPLICATION 1-1pm: 1133.8, 1010.

Patented July 11, 1911.

WITNESSES INVENTOR (Jaime: 7W2? Jrz'a a q? Attorney mum-A Iumoaum 60.. wmlmmnu. a. a.

UNITED STATES PATENT OFFICE.

JAMES WINDRIDGE, OF MIDDIJEFIELD, CONNECTICUT, ASSIGNOR TO THE LYMAN GUN SIGHT CORPORATION, OF MIDDLEFIELD, CONNECTICUT, A CORPORATION OF OON- NECTIOUT.

SIGHT FOR FIREARMS.

Specification of Letters Patent.

Patented July 11, 1911.

To all whom it may concern:

Be it known that I, J AMES Wmnnrocn, of Middlefield, in the county of Middlesex and in the State of Connecticut have invented a certain new and useful m Jrovement in Sights for Firearmsand do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to sights for firearms, and my obgcct is to rovide a gun sight in which, wi 1 be embo iecl the desirable qualities of capacity for both ra )id and fine, or close, adjustment; secure loc ing of the sight in the desired position of ad ustment; simplicity and rigidity of construc tion; and parts 'of plain and easy construction that may be readily assembled and taken apart.

My invention consists in the combination, arrangement and construction, of parts suhstantially as hereinafter described and claimed.

In the accompanying drawings forming a part of this specification-Figure 1 is a s1de elevation of my improved sight, shown mounted upon the receiver of a rifle; Fig. 2 is an end elevation of Fig. I viewed from the rear end of the receiver, and showing the sight as it is presented to the eye in the act of aiming a. point blank position; Fig. 3 is a horizontal section on the central plane of the locking bolt with the parts in locked position; Fig. 4 is a similar section with the parts in unlocked position; Fig. 5 is an end view of the loclrin bolt; Fig. 6 is a front end view of the sig t, or thcrevcrse of Fig. 2, with the slide in elevated osition; Fig. 7 is a plan view of the sight, 'ig. 8 is a horizontal section of the sight base on the central plane of the locking bolt, as in Figs. 3 and 4; Fig. 9 is a vertical lengthwise section on the line 9-9 of Fig. 6; Flg. 10 is a. cross section ofthe locking bolt on the plane 10'10 of Fig. 3; Fi '11 is an end view of the clampin nut o the lockin bolt' and Fi 12 is a orizontal section rough the sig 1: and attached part of the receiver on the line 1212 of the holding screws of I invention in the embodiment thereof illus rated in the drawings, is a receiver sight, or one mounted directly upon and attached to the receiver or frame of the arm, and in Figs. 1 and 2 of the drawings I show such si ht mounted upon the receiver of a Spring ield rifle of the 1903 model. It is to be understood, however, that I do not re strlct myself to the embodiment of my invention in a sight adapted to any particular model or make of firearm. The receiver A of the rifle shown is substantially cylindrical in its main cross section, and it is to such main section that the sight is attached, on the right hand side thereof, which is the most feasible position for the particular model of receiver here shown, but on most of the usual types of firearms it will be mounted on the left side, and without material alteration of its construction.

The base 1 of the sight is a sim lo block being of cubical configuration wit] square corners and plane surfaces throughout except that on the side which engages the receiver itis concavely curved to conform to the cylindrical shape thereof. In the face of the base, or side opposite the receiver is a vertical guidcway 2 of uniform dovetailed cross section havin its least width at the surface of the bloc as shown articularly in Fig. 8. The base is secured to the roceivcr in the present instance by two screws 3, inserted on the horizontal plane of the axis thereof, one of them passing through the block forward of the guideway 52, and the other being within the vertical plane of the guideway as shown in Fig. 12.

Fitted to move freely in the guideway 2 of the base is the vertical slide or sight limb i of similarly dovetailed cross sectlon, and having the horizontal sight curryin arm 5 at itsuppcr end, at right angles to he verticnl part and overhanging the receiver. Journaled in an opening in said arm, and one in a lug 6 near the lower end of the slide on the inner side thereof is a vertical adjusting screw 7 arranged parallel with the slide, and held in place by the knurled head 8 on its upper end, bearing on the arm, and the not 9 and washer e on its lower end, bearing on the lug 6. The adjushn screw is placed close to the slide, and the use is provided with a suitable groove 10 for its reception. The sight arm carries the peep sigh 11 mounted thereon, in a roove 12 and adapted for wind gage a ustment laterally of the gun barrel by the screw 13 journaled in the arm and engagmgh the sight, operated by the head 1' pinned t creon, but said features are old and form no part of my present invention, nor require urther description.

In the upper part of the base is a horizon tal cylindrical chamber 14 arallel with the outer face thereof, and witi the axis of the barrel, and extending entirely through the base from its rear to its forward side. It is of uniform diameter for the greater art of its len th, but reduced to a smaller ore 15 at its orward end, which bore opens into a larger circular recess at the front face of the base to form an annular shoulder 16 at the bottom thereof. The chamber 14 intersects the guideway 2 as fully shown in Fig. 8, said intersection bein oi the shapeof a segment, the chord of t 1e are of which 00- incides with the plane of the inner side of the groove.'

The chamber 14 of the base receives the slide lock'in bolt or bar '17 having its forward end 1 of reduced diameter to fit the bore 15 and threaded to receive the locking nut 19, having its hub 20 bearing in the is com 16. In its construction, said locking bolt is drilled through transversely and screw threaded to fit and engage the adjusting screw 7, after which a clearance space 21 is milled away on the side toward the reduced part 18 leaving the threaded half bearing 22 for engagement of the screw, and the locking bolt is also milled away on the side away from the receiver to corres end tothe guideway 2 and receive the sli e 4. The portion of the head of the bolt left intact thus rovides a lip or abutment 23 as shown in his. 3, 4, 5 and 10 adapted to overhan an engage the slide when the thrende screw bearin 22 of the bolt is engaged with the adjusting screw 7 as shown in 4 ig. 3, andthe clearance space 21 enables the locking bolt to be moved in its bearin sufficiently to disen age said lip from t e slide, and also to isengage the threaded halfbearin of the bolt from the adjustin screw, as shown in Fig. 4. The range 0 movement of which the bolt is capable is determined by adjustment of the locking nut 19, which when screwed up to bring its hub into contact with the shoulder 16 and draw the threaded half bearing 22 into engagement with the screw 7 and the lip 23 of the bolt into engagement with the slide, will rigidly look all the parts in place, as shown in Fig. 8, or when screwed back from such osition as shown in Fi 9 will permit the ocking bolt to be pushe rearwardly to dis engage the parts,-as shown in Fig. 4. The locking nut is limited in its backward travel by a stop screw 24 screwed into the end of t e locking bolt into the seat 71 therein. The locking bolt is normally held in engagement with the slide 4 and adjusting screw 7 by a leaf spring 25 situated in a groove 26 on the rear side of the base, se-

will first be necessary to loosen t cured thereto at its lower end by the screw 27, and having its up er end engaging a slot 28 in the locking boit, a certain amount of: clearance space being provided under the 5 ring for its movement. The tension of t e sprin is exerted in the direction of the base and therefore will push the bolt to ward the adjustin screw, but will yield under pressure in he reverse direction, and thus permit the disengagement of the parts.

The sight carrying arm 5 is Rlmwn as vided With a point blank screw m, and the sight is equipped with the usual indicator 2,9 and accompanying graduations 30 for registering the elevation, and the graduations 31 for wind gage, but these require no further description.

Constructed as above described and the function of the lockin bolt having been hereinbefore set forth, he operation of this improved sight mechanism is as follows: Assuming the parts of the device to be ad justed and secured in a given position, as, for instance, at point blank, which position is determined by contact of the point blank screw m with the upper surface of the base, as shown in Fi 2, in order to adjust the slide and its siglt to a difierent osition it iie locking nut 19 sufiiciently to relieve the slide in the guideway 2, for the lip 23 of the locking bolt is so placed thatit will firmly clamp the slide in its bearings when the screw bearing 22 is pressed tightly into engagement with the thread of the adjusting screw. After the slide is thus slightly loosened in its bearings it may be raised or moved to an height by turning the adjusting screw 7. guch movement of the side will .be relatively slow, and is therefore calculated for fine and careful nd'ustmen't, or for adjustment through short istances only, though it may be moved by this method the whole length of the screw. In chan 'ng theposition of the slide through a consi erable space, or with more rapidity the locking nut may be screwed back until there is suflicient s ace under it to permit the locking bolt to e moved entne y out of engagement with the adjustingd screw 7, or to the dotted line in Fig. 3, an as shown in Fig. 9, when by pressing the nut against the tension of the s ring the lockin bolt will be entirely dlsengaged from t e adjusting screw and the slide will be free to be moved independently of the screw by being pushed bodil in the re quire direction. By this method the slide maybe instantaneously elevated or depressed approximately to thedesired position, after which, by relieving the pressure on the lock ing nut19, the locking bolt will be returned to engsfement with the adjusting screw 7 by the orce of the spring, and the required fine and exact adjustment can be. obtained by use of the adjusting screw. The spring will normally hold the lockin bolt in enugement with the screw at al times, and it will not be necessary to lock the arts in engagement by means of the locking nut except when it is desired to guard against any possible change of elevation of the si ht. Usually, when it is expected to make requent or sudden change of the sight elevation, the locking not will be left unused and in its retracted position, but it can be employed at will and readily thrown into use or disuse. as may become expedient. The

. advantage of the above features, combining instantaneous action and minute adjustment of the sight and the capacity of being quickly locked in position when required is of great importance in connection with the use of a gun si ht. A construction which permits .the res y removal of the slide from the base and replacement therein is also highly dcsirable. The simplicity of the mechanism throughout, consisting as it does of few parts of plain construction, which may be easily made, assembled, and cleaned, and are not liable to become deranged onworn, renders the sight highly advantageous. My sight is applicable to various classes of arm and style of model.

The relation'of the bearing surfaces of the locking bolt respectively upon the adjusting screw and the slide to each other is such that the contact pressure of the threaded bearing upon the screw is practically the same as that of the li of the locking bolt upon the slide but it IS preferable that the bolt should bear slightly harder upon the slide than upon the adjusting screw. The

articular model shown calls for the mountmg of the sight upon the right hand side of the receiver, while most models of fircarms are the reverse. The adaptation of the sight for right or left hand use, however, requires only corresponding change of construction.

While'I have illustrated and described in particularity certain details of construction, it is to be understood that I do not restrict my invention to a sight having the particular details of construction set forth.

I claim 1. In a sight for firearms, the combination of a base, a. si 'ht-carrying slide movable in the base, on adjusting screw mounted upon and movable with the slide, and a lockin member movable in the base and rovide with a threaded bearing engages 1e with the adjusting screw.

2. In a sight for firearms, the combination of a base, a si ht-ca-rrying slide movable in the bass, an a jnsting screw mounted upon and movable with the slide, and a locking member movable in the base and provided with athreaded bearing e ageable with the adjusting screw and with e slide.

8. In a sight for firearms, the combination of a base, a si ht carrying slide movable in the base, an a justing screw mounted upon and movable with the slide, a locking mem ber movable in the base and provided with a threaded bearing engageable with the ad justing screw, and locking means for fastenin the locking member in such engagement with the adjustin screw and with the slide.

4:. In a sight "or firearms, the combination of a base, a sight carrying slide movable in the base, an adjusting screw mounted upon and movable with the slide, a lookingmember movable in the base and provi ed with a threaded bearing engagcable with the adjusting screw, and a spring for yieldingly holding the locking members in such engagement with the screw.

5. In a sight for firearms, the combination of a base, a sight carrying slide movable in the base, an adjusting screw mounted upon and movable with the slide, a locking member movable in the base and provi ed with a threaded bearing en ageable with the adjustin screw and an abutment engageable with t e slide, and a. spring for yieldingly holding the locking member in such engagement with the screw and slide.

6. In a sight for firearms, the combination of a base, a sight carrying slide movable in the base, an adjusting screw mounted upon and movable with the slide, a looking member movable in the base provided with a threaded bearin engageable with the ad'usting screw, an an abutment;- engeable with the slide, and a screw for -iawing the locking member into such engagement with the adjusting screw and sli e.

7. In a sight for firearms, the combination of a base, a sight carrying slidelertipgll r igygble in the base, a vertical adj ustmg screw fflo'fihted upon and movable with the slide, a locking bar movable in the base transversely lp thq glide, havin a threaded half caring engzigeable witli t 'Eh'djusting screw and a lip or abutment en ageable with the slide, and a spring actingdietween the base and locking bar to yieldingly hold the bearing parts thereof in engagement with the a justing screw and slide.

8. In a sight for firearms, the combination of a base, a sight-carrying slide vertically movable in the base, a vertical adj usting screw mounted upon and movable with the slide, a locking bar movable in the base transversely to the slide, havin a threaded half bearing engageable with the adjusting screw and a, hp or abutment en ageable with the slide, and a spring actinglietween the base and locking bar to yieldingly hold the bearing parts thereof in en agement with the adjustin screw, and s i e and screw mechanism or drawing and holding the locking bar in en agement with the adjusting screw and sli e.

9. In a sight for firearms, the combination of a base, a sight-carrying slide movable in the base, an adjustin screw mounted upon and movable with the slide, a lockin member movable in the base and pro vided with a threaded bearin engegeable with the adjusting screw, and means for drawing the bearing into contact with the screw and locking it in such engaged position.

10. In a sight for firearms, the combination of a base, a sight-carrying slide mov able in the base an ad ustin screw mounted upon and movable wit the s ide, and a locking member movable in the base and provided with a threaded bearing engageable with the adjusting screw and with the slide, and screw mechanism for drawing the locking member into and securing it in engagement with the screw.

11. In a sight for firearms, the combination of a base, a sight-carrying slide vertieallxmgoxablecin the base, a vertical a d mounted upon an movable wit e slide, a loekin bar'movable in the base ansversel to t e slide having a threaded ha earing engageab e with the adjusting screw and a lip or abutment engageable with the slide, a spring acting between the base and locking bar to yieldingly hold the bearing (parts thereof in enga cut with the a justing screw and sligz and a locking nut mounted on the locking bar for drawing the bar into engagement with the screw and locking itin sue engaged position.

12. In a sight for firearms, the combination of a base, a sight-carrying slide movable in the base, a slide-adjusting screw, and a bar having thread to cooperate with the screw, said her being movable into and out of screw-engaging position, and said bar having a lip adapted to engage the slide when the bar is in screw engaging position.

18. In a sight for firearms, the combination of a base, a sight-carryin slide movable in the base, a slide adjusting screw, a bar havin thread to cooperate with the screw, seicf bar beingmovable into and out of screw engaging position, said bar having a lip adapted to engage the slide when the bar is in screw engaging (Position, and a lockin nut engaging three on the bar.

14. n a sight for firearms, the combination of a. base, a sight-carrying slide movable in the base, a slide adjust-mg screw, a bar situated in an o ening extending through the base from s de to ,side thereof and having thread to cooperate with the,

screw, and said bar bein movable to place its thread into and out o engagement with the screw, a spring en aging said bar on one side of the base, an a locking member u on the end of said bar on the other side of t e base.

In testimony that I claim the foregoing, I have hereunto set my hand.

JAMES WIN BRIDGE.

Witnesses Ienenu. L. Coon, Amman H. Anson.

Copies of thin patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

- Washington, D. G." 

